KR102265006B1 - Adhesive resin composition, fluorine-based resin adhesive film, laminate and manufacturing method of laminate - Google Patents

Abstract

The present invention provides an adhesive resin composition used for bonding a fluorine-based resin, for the purpose of bonding fluorine-based resins or a fluorine-based resin and a material other than the fluorine-based resin. More specifically, the present invention provides an adhesive resin composition comprising a polyethylene-based resin (A), an elastomer component (B), and a component (C) having an epoxy group and a vinyl group, which are used for bonding a fluorine-based resin, wherein the The content of (A) is 55 parts by mass or more and 90 parts by mass or less, the content of (B) is 10 parts by mass or more and 45 parts by mass or less, and (B) and (C) have a common repeating unit, Content of said (C) with respect to 100 mass parts of total amounts of said (A) and said (B) is 0.1 mass part or more and 1.5 mass parts or less It relates to the adhesive resin composition characterized by the above-mentioned.

Description

Adhesive resin composition, fluorine-based resin adhesive film, laminate and manufacturing method of laminate

The present invention relates to an adhesive resin composition, a fluorine-based resin adhesive film, a laminate, and a method for manufacturing the laminate.

Film laminates with high barrier properties are used for packaging materials such as food and pharmaceuticals. For example, in Patent Document 1, a modified polyolefin obtained by radical polymerization of an epoxy group-containing acrylic acid ester or derivative, polyolefin, and aromatic vinyl monomer in melt kneading, polyethylene having a density of 0.940 g/cm 3 or less, and a styrenic thermoplastic elastomer An adhesive resin composition comprising

Patent Document 2 describes an adhesive resin composition containing a polyolefin-based resin, a compound having an intramolecular unsaturated bond, and an epoxy compound.

Patent Document 3 describes a resin composition for extrusion lamination comprising an ethylene-based polymer and a liquid epoxy-modified diene copolymer at 25°C.

Patent Document 4 describes a laminate comprising an olefin-based resin, a rubbery polymer, and an acrylic graft copolymer, which has adhesiveness between the olefin-based resin layer and the fluorine-based resin layer and uses a resin composition suitable for use in co-extrusion molding. has been

Japanese Patent Application Laid-Open No. 2015-117281 Japanese Patent Laid-Open No. 2000-103914 Japanese Laid-Open Patent Publication No. 2003-063226 Japanese Laid-Open Patent Publication No. 2000-015754

However, in the technique described in Patent Document 1, since melt-kneading is performed in the presence of a radical polymerization initiator, the initiator remains in the finally produced adhesive resin composition. For this reason, when stored for a long period of time, there is a possibility that the properties of the resin itself change significantly.

Moreover, in patent document 1, the epoxy group is introduce|transduced into resin partially by superposition|polymerization. In this case, the adhesiveness of the resin does not appear unless it is near the melting temperature of the resin. For this reason, there exists a problem that the adhesiveness required for the use which requires adhesion|attachment and fusion|fusion in a lower temperature condition or a short time is not obtained.

In the technique described in Patent Document 2, epoxidized vegetable oil is used as the epoxy compound. The fatty acids described in Patent Document 2, such as linolenic acid, which is a main component of soybean oil, and linoleic acid, which is a main component of flaxseed oil, have a molecular weight of several hundred. For this reason, when it forms into a film, it bleeds immediately, and there exists a problem that it becomes easy to produce adhesion|attachment failure.

In the technique of patent document 3, an ethylene polymer occupies 98.5-99.9 mass parts. For this reason, since the adhesiveness to polypropylene was insufficient, there existed a problem that it could not be used as an adhesive resin for extrusion lamination with respect to a polypropylene base material, and co-extrusion with polypropylene.

In addition to the above, all of the adhesive resins of patent documents 1 - 3 had the problem that adhesiveness with a fluorine-type resin was inadequate.

The technique described in Patent Document 4 has adhesive properties with a fluorine-based resin or an olefin-based resin, but is produced by reacting a radical polymerization monomer with a modified olefin polymer having a functional group consisting of carboxylic acid or its anhydride group, epoxy group, hydroxyl group, or isocyanate group. have. For this reason, for example, since there is no reactive group with an engineering plastic-based resin having an amino group, a carboxyl group, or a hydroxyl group at the terminal of a resin such as a polyamide-based resin and a polyester-based resin, the adhesiveness with these resins is high. There was a problem with lowering.

The present invention has been made in view of the above circumstances, and as an adhesive resin composition used for bonding with a fluorine-based resin, an adhesive resin composition for the purpose of bonding fluorine-based resins or a fluorine-based resin and materials other than the fluorine-based resin. aim to

That is, this invention employ|adopted the following structure.

[1] An adhesive resin composition comprising a polyethylene-based resin (A), an elastomer component (B), and a component (C) having an epoxy group and a vinyl group, used for adhesion of a fluorine-based resin,

The content of the polyethylene-based resin (A) is 55 parts by mass or more and 90 parts by mass or less,

The content of the elastomer component (B) is 10 parts by mass or more and 45 parts by mass or less,

The content of the component (C) having an epoxy group and a vinyl group with respect to 100 parts by mass of the total amount of the polyethylene-based resin (A) and the elastomer component (B) is 0.1 parts by mass or more and 1.5 parts by mass or less Adhesive resin composition .

[2] The adhesive resin composition according to [1], wherein the component (C) having an epoxy group and a vinyl group is one in which an epoxy group is partially introduced into 1,2-polybutadiene, and has a number average molecular weight of 500 or more and 4,000 or less.

[3] The adhesive resin composition according to [1] or [2], wherein the elastomer component (B) is a styrene-ethylene-butylene-styrene copolymer having a styrene content of 8% by mass or more and 24% by mass or less.

[4] The adhesive resin composition according to any one of [1] to [3], wherein the polyethylene-based resin (A) is polyethylene polymerized with a metallocene-based catalyst.

[5] A fluororesin adhesive film having a single layer structure formed from the adhesive resin composition according to any one of [1] to [4].

[6] A laminate having a layer formed of the adhesive resin composition according to any one of [1] to [4].

[7] The method for producing the laminate according to [6], wherein the method for producing the laminate according to any one of the following (1) to (3):

(1) a step of melt-extruding a layer formed of the adhesive resin composition to obtain a single-layered fluorine-based resin adhesive film, and laminated films on both sides of the fluorine-based resin adhesive film, followed by thermocompression bonding to obtain a laminate a method for producing a laminate having a process;

(2) a step of melt-extruding a layer formed of the adhesive resin composition onto a film serving as a first substrate to obtain a laminate of a first substrate/adhesive layer; a method for producing a laminate having a step of laminating to form a layer/second substrate and then thermocompression bonding to obtain a laminate;

(3) A method for producing a laminate comprising a step of simultaneously melt-extrusion molding a resin serving as a raw material for the first substrate, the adhesive resin composition, and a resin serving as a raw material for the second substrate.

ADVANTAGE OF THE INVENTION According to this invention, as an adhesive resin composition used for adhesion|attachment of a fluororesin, the adhesive resin composition aimed at adhering fluororesins or a fluororesin and materials other than a fluororesin can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing of the laminated body of this invention.
It is a schematic diagram of the tensile strength measuring apparatus in an Example.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated based on preferable embodiment.

<Adhesive resin composition>

The adhesive resin composition of this invention is used for adhesion|attachment of a fluororesin. For example, it can be preferably used for adhesion between films in the case of laminating fluororesin films, or adhesion between films in the case of laminating a fluororesin film and other resin films other than fluorine resins.

When the adhesive resin composition of the present invention is described as a polyethylene-based resin (A) (hereinafter, may be described as “component (A)”) and an elastomer component (B) (hereinafter as “component (B)”) and a component (C) having an epoxy group and a vinyl group (hereinafter, sometimes referred to as “component (C)”).

Moreover, in the adhesive resin composition of this invention, content of the said component (A) is 55 mass parts or more and 90 mass parts or less, and content of the said component (B) is 10 mass parts or more and 45 mass parts or less.

Moreover, content of the said component (C) with respect to 100 mass parts of total amounts of the said component (A) and the said component (B) is 0.1 mass part or more and 1.5 mass parts or less.

Hereinafter, each component is demonstrated concretely.

≪Ingredient (A)≫

The polyethylene-based resin used in the present embodiment is not particularly limited, but any one selected from the group consisting of linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), medium-density polyethylene (MDPE), and high-density polyethylene (HDPE). species or two or more species are preferred. The polyethylene-type resin may be either biomass polyethylene, petroleum-derived polyethylene, or a mixture of both.

In the present embodiment, the polyethylene-based resin is preferably polyethylene polymerized with a metallocene-based catalyst. Among them, ethylene-α-olefin copolymers such as C4-LLDPE, C6-LLDPE, and C8-LLDPE polymerized with a metallocene catalyst; Long-chain branched polyethylene and the like are preferred examples.

Polyethylene-based resins polymerized by a metallocene-based catalyst tend to have a narrow molecular weight distribution. For this reason, it is thought that there are few low molecular-weight components which can become an adhesion inhibitory factor, and when it uses as an adhesive agent, high adhesiveness is obtained.

0.890 g/cm 3 or more and 0.940 g/cm 3 or less are preferable, and, as for the density of a polyethylene-type resin, 0.910 g/cm 3 or more and 0.930 g/cm 3 or less are more preferable.

Content of the component (A) in an adhesive composition is 55 mass parts or more and 90 mass parts or less, and 60 mass parts or more and 80 mass parts or less are preferable.

When content of a component (A) is below the said upper limit, adhesiveness with the component (B) mentioned later is exhibited, and adhesiveness becomes high.

≪Ingredient (B)≫

In this embodiment, as an elastomer component, what is necessary is just a component provided with the characteristic as an elastomer, A styrene type elastomer, an acrylic type elastomer, a urethane type elastomer, an ester type elastomer, etc. are mentioned. However, component (B) excludes the component (C) mentioned later.

Among them, a styrenic elastomer is preferable, and for example, a block copolymer having a hard segment made of polystyrene or the like and a soft segment made of polyethylene, polybutadiene, or polyisoprene or the like is mentioned. As a styrenic polymer usable for a styrenic elastomer, the copolymer of aromatic olefin-aliphatic olefins, such as a styrene-butadiene copolymer, a styrene-isoprene copolymer, and a styrene-ethylene copolymer, is mentioned.

In this embodiment, it is preferable that the styrene-based elastomer is a styrene-ethylene-butylene-styrene copolymer (SEBS) in which the unsaturated bonds in the molecule of the styrene-butylene-styrene copolymer (SBS) are completely hydrogenated.

Moreover, it is preferable that they are 8 mass % or more and 24 mass % or less, and, as for the styrene content rate, 10 mass % or more and 20 mass % or less are more preferable.

Hardening of resin can be suppressed as styrene content is below the said upper limit, and the fall of adhesiveness can also be suppressed.

In the present embodiment, examples of the component (B) include Dynaron manufactured by JSR Corporation, Toughtech H series manufactured by Asahi Kasei Chemicals Corporation, and Kraton G Polymer manufactured by Kraton Polymers Corporation.

Content of the component (B) in an adhesive composition is 10 mass parts or more and 45 mass parts or less, and 20 mass parts or more and 40 mass parts or less are preferable.

When content of a component (B) is below the said upper limit, the fall of the tensile strength at the time of forming an adhesive bond layer can be suppressed, and the fall of adhesive strength can be prevented.

In this embodiment, the sum total of the said component (A) and the said component (B) shall be 100 mass parts.

≪Ingredient (C)≫

In this embodiment, component (C) is a component which has an epoxy group and a vinyl group. The component (C) preferably has a 1,2-vinyl structure, and an epoxidized polybutadiene obtained by partially epoxidizing butadiene is preferable. Partially epoxidized 1,2-polybutadiene is particularly preferred.

Examples of the component (C) that can be used in the present embodiment include liquid polybutadiene JP-100 and JP-200 manufactured by Nippon Soda Co., Ltd., and Adekasizer BF-1000 manufactured by ADEKA Corporation.

It is preferable that the number average molecular weights of a component (C) are 500 or more and 4,000 or less.

When the number average molecular weight of a component (C) is below the said upper limit, the fall of the adhesiveness by becoming a solid state at normal temperature can be suppressed, and the fall of adhesiveness can be prevented.

In this invention, a number average molecular weight is a polystyrene conversion value measured by GPC (gel permeation chromatography).

In addition, as component (C), it is preferable to use liquid epoxidized polybutadiene.

In this embodiment, content of the component (C) with respect to 100 mass parts of total amounts of the said component (A) and the said component (B) is 0.1 mass part or more and 1.5 mass parts or less, 0.5 mass part or more and 1.0 mass part or less desirable.

When content of a component (C) is below the said upper limit, the low molecular-weight component in the adhesive composition used as a factor of adhesion inhibition can be reduced.

In this embodiment, it is preferable that the said component (B) and component (C) have a common repeating unit, and mutually compatible. As for the component (B) and component (C), the combination of styrene-type elastomers and acrylic-type elastomers is preferable.

The adhesive resin composition of this invention is characterized by mixing component (A), component (B), and component (C) in a specific compounding ratio, respectively. In the adhesive resin composition of the present invention, the epoxy group in the component (C) is compatible with the fluorine component of the fluorine resin and adheres to the fluorine resin. When it has an epoxy group, adhesion|attachment with a metal material also becomes possible. In the present invention, by mixing the component (A), the component (B), and the component (C) in a specific mixing ratio, respectively, the component (A) corresponds to the "sea" and the component (B) corresponds to the "island", the so-called sea-island A component (C) can be uniformly disperse|distributed in an adhesive resin composition by forming a structure, and also by making a component (C) compatible with a component (B). It is thought that the epoxy group in a component (C) is protected by a component (A) and a component (B) by this, and the ring-opening of the epoxy group by water|moisture content is suppressed. For this reason, this invention can provide the adhesive resin composition excellent also in water vapor barrier property.

<Film for fluorine-based resin adhesion>

The present invention provides a fluorine-based resin adhesive film and laminate formed of the adhesive resin composition.

The fluorine-based resin adhesive film of the present invention is a single-layered film formed from the adhesive resin composition. In the present embodiment, the "film" is a flat molded article having an expansion in the plane direction that can be molded by melt molding, and includes things from very thin to thick (so-called sheet-like ones).

<Method for producing fluorine-based resin adhesive film>

The manufacturing method of the fluororesin adhesive film of a single-layer structure is not specifically limited, It can manufacture by the inflation molding method, the T-die molding method, and the single-layer extrusion method.

<Laminate>

In the laminate of the present invention, an adhesive layer made of the adhesive resin composition is laminated on at least one surface of a substrate.

The schematic diagram of the cross section of the laminated body of this invention is shown in FIG. In FIG. 1 , a laminate 1 includes an adhesive layer 10 , a fluororesin film 11 , and a resin film 12 .

Examples of the fluorine-based resin material forming the fluorine-based resin film 11 include polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkylvinyl ether copolymer (PFA), and tetrafluoroethylene-hexafluoropropylene. copolymer (FEP), tetrafluoroethylene-hexafluoropropylene-perfluoroalkylvinyl ether (EPA), tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polychlorotrifluoro Loethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), and one or more mixtures thereof may be used, and polychlorotrifluoroethylene (PCTFE) is preferred.

The adhesive layer 10 may be formed using the adhesive resin composition of the present invention.

The resin film 12 may be the same as the said fluororesin film, and a resin film other than this may be sufficient as it. As a resin material of resin films other than a fluororesin film, polypropylene, polyethylene terephthalate, polyester, etc. are mentioned, for example.

<Method for Producing Laminate>

It is preferable to manufacture the laminated body of this invention by the manufacturing method of any one of the following (1)-(3).

(1) a step of melt-extruding a layer formed of the adhesive resin composition to obtain a single-layered fluorine-based resin adhesive film, and laminated films on both sides of the fluorine-based resin adhesive film, followed by thermocompression bonding to obtain a laminate A method for manufacturing a laminate having a process.

(2) a step of melt-extruding a layer formed of the adhesive resin composition onto a film serving as a first substrate to obtain a laminate of a first substrate/adhesive layer; A method for producing a laminate, comprising: laminating to form a layer/second substrate, followed by thermocompression bonding to obtain a laminate.

(3) A method for producing a laminate comprising a step of simultaneously melt-extrusion molding a resin serving as a raw material for the first substrate, the adhesive resin composition, and a resin serving as a raw material for the second substrate.

The molding method of the laminate can be produced by a co-extrusion method such as an inflation molding method or a T-die molding method.

In the manufacturing method of (2) above, if the T-die molding method is used, methods such as the extrusion lamination method in which the resin is extruded onto the substrate and the sand lamination method in which the resin is extruded between the substrate and the preparation material may be used.

The base material for extruding the adhesive resin composition of the present invention may be any of the above-mentioned fluororesin material or resin material other than the fluororesin.

When a resin material other than a fluorine-based resin is used as the base material, a film in which a resin material other than the fluorine-based resin, an adhesive layer, and a fluorine-based resin are laminated can be produced by setting and laminating a fluorine-based resin as a combination material. .

In the manufacturing method of the above (3), when the resin is extruded in a configuration of two or more layers using the co-extrusion method, for example, the adhesive resin composition of the present invention is arranged on the surface side, and the surface layer combination material By laminating by setting the fluorine-based resin on the side, a laminate of three or more layers having a layer structure adjacent to the fluorine-based resin can be finally formed.

For example, when a fluorine-based resin that has a low melting point and can be melt-extruded, such as an acid-modified ethylene-tetrafluoroethylene copolymer, is melted simultaneously as an adjacent layer of the adhesive resin composition of the present invention by a co-extrusion method. You may extrude.

Example

Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited by these examples.

Each of the component (A), component (B), and component (C) shown in Table 1 was mixed at the compounding ratio shown in Table 1, and the adhesive resin composition was prepared.

Each abbreviation in Table 1 means the following. In addition, the numerical value in [ ] is a compounding quantity (part by mass).

(A)-1 ... Exelene GMH GH030 (metallocene polymerized long-chain branched polyethylene, ρ = 0.912 g/cm 3 , Tm = 101 ° C, MFR = 0.5 g/10 min (190 ° C, 2.16 kgf), Sumitomo Chemical Co., Ltd. ) Produce)

(A)-2...Petrocene DLZ19A (low-density polyethylene containing an epoxy group, ρ=0.919g/cm3, Tm=106°C, MFR=7g/10min (190°C, 2.16kgf), manufactured by Tosoh Corporation)

(B)-1... Kraton G1657M (Styrene content 13% by mass, ρ=0.90g/cm3, MFR=22g/10min (230°C, 5kgf), manufactured by Kraton Co., Ltd.)

(B)-2...Toughtech H1221 (styrene content 12% by mass, ρ=0.890g/cm3, MFR=4.5g/10min (230°C, 2.16kgf), manufactured by Asahi Kasei Chemicals Co., Ltd.)

(B)-3...Toughtech H1062 (Styrene content 18% by mass, ρ=0.890g/cm3, MFR=4.5g/10min (230°C, 2.16kgf), manufactured by Asahi Kasei Chemicals Co., Ltd.)

(C)-1 ... Epoxylated 1,2-polybutadiene, ρ = 0.99 g/cm 3 , Mn = 1,000, manufactured by ADEKA Corporation

(Production Example 1)

After heating and melt-mixing each adhesive resin composition of Examples 1 to 8 and Comparative Examples 1 to 4 shown in Table 1, a film was formed by a T-die extruder, and a melt-mixed film having a film thickness of 50 µm was formed as a single adhesive layer. was prepared as a film (melt-mixed film 10) of

≪Measurement of peel strength≫

A peel strength measurement is demonstrated using FIG.

Using the prepared melt-mixed film 10, the following laminates 1-4 laminated in three layers in the order of the fluorine-based resin film 11, the melt-mixed film 10, and the adherend film 12 were 50 mm long and horizontally It cut out in the rectangular shape of 15 mm, and it was set as the test piece.

Furthermore, the upper and lower sides were respectively sandwiched between 50 µm-thick PTFE sheets, and 10 mm from the tip of this test piece was heat-sealed. Heat-sealing conditions were made into the sealing temperature of 240 degreeC, the pressure of 0.4 MPa, and the heating time was 3 second.

Thereafter, the upper and lower PTFE sheets are removed, the fluorine-based resin film 11 is gripped with a gripper 22 so as to be on the tension side, and the adherend film 12 is gripped and fixed with a gripper 20, and the fluorine-based resin film The tensile and peeling strengths were measured in the tensile direction in which (11) is shown by the code|symbol 21.

The tensile rate was measured at 300 mm/min and 15 mm in width.

The fluorine-based film, the melt-mixed film, the adherend film and the lamination order thereof used in the test are as follows.

[Laminate]

Laminate 1: MAH-ETFE/adhesive layer (review resin)/PP

Laminate 2: PCTFE/adhesive layer (review resin)/PP

Laminate 3: PCTFE/adhesive layer (review resin)/PCTFE

Laminate 4: PCTFE/adhesive layer (review resin)/PET

Each abbreviation in the laminated body 1-4 means the following.

MAH-ETFE... Fluorine resin film. Fluon LH-8000 (ρ = 1.75 g/cm 3 , Tm = 180 ° C, MFR = 4 g/10 min (230 ° C, 2.16 kgf), manufactured by Asahi Glass Co., Ltd.) was produced and used with an extruder on a 50 μm film.

PP...polypropylene film. Sun Allomer PS522M (ρ = 0.9 g/cm 3 , MFR = 4.9 g/10 min (230 ° C, 2.16 kgf)) was produced and used with an extruder on a 50 μm film

PCTFE... polychlorotrifluoroethylene film DF0050-C1 (51 µm) (manufactured by Daikin Industries, Ltd.) was used.

PET... polyethylene terephthalate film. Polyester film E5001 (250 µm, untreated) (manufactured by Toyobo Co., Ltd.) was used.

The peeling strength and peeling external appearance of the laminates 1 to 4 are shown in Tables 2-3 below.

From the results shown in Tables 2 and 3, in Examples 1 to 8 to which the present invention is applied, it can be confirmed that the adhesive strength is improved by mixing polyethylene-based resin, styrene-based elastomer, and epoxidized polybutadiene in a predetermined mixing area. there was.

On the other hand, in Comparative Example 1 to which the present invention is not applied, not only the fluorine-based resin but also the polypropylene did not adhere, resulting in a very low peel strength.

In Comparative Example 3 to which the present invention was not applied and to which epoxidized polybutadiene was not added, compared with Example 2 to which the present invention was applied, the adhesive strength was greatly reduced.

In addition, in Comparative Example 2 using epoxy group-containing polyethylene, the peel strength was high compared to Comparative Example 1 of the polyethylene alone, and the peel strength between PCTFE/PET was also high, but overall, a styrenic elastomer containing It did not reach the present invention.

Comparative Example 4 to which the present invention is not applied resulted in weak peel strength between MAH-ETFE/PP and PCTFE/PET.

(Production Example 2)

PCTFE resin (manufactured by Daikin Industries, Ltd.) as a resin serving as a raw material for the first substrate, the adhesive resin composition described in Example 1 of Table 1 above, and polypropylene (sunallomer) as a resin serving as a raw material for the second substrate PS522M) was separately heated and melt-mixed, using an extruder capable of simultaneous multi-layer extrusion molding to form a film by performing simultaneous multi-layer film formation, and three layers of PCTFE (50 µm)/adhesive layer (20 µm)/PP (50 µm) The laminated film of the structure was obtained.

The obtained laminated|multilayer film had the very favorable adhesive strength between each layer, and also had favorable planarity.

(Production Example 3)

Melting and kneading the adhesive resin composition described in Example 1 of Table 1, and forming a film using a T-die so that the adhesive layer becomes 30 μm on the PET film, which is the first base layer of 100 μm, using a PET/adhesive A laminate consisting of layers was obtained. After laminating a PCTFE resin film (manufactured by Daikin Industries, Ltd.) as a second substrate layer of 51 µm on the obtained laminate, thermocompression was performed at a temperature of 240 ° C., a pressure of 0.4 MPa and a heating time of 3 seconds, and PET (100 µm)/adhesive layer (30 µm)/PCTFE (51 µm), a laminate having a three-layer structure was obtained.

The obtained laminated|multilayer film had the very favorable adhesive strength between each layer, and also had favorable planarity.

1: laminate, 11: fluorine-based resin, 10: adhesive layer, 12: resin film, 21: tensile direction, 20, 22: gripper

Claims (7)

An adhesive resin composition comprising a polyethylene-based resin (A), an elastomer component (B), and a component (C) having an epoxy group and a vinyl group, used for adhesion of a fluorine-based resin,
The content of the polyethylene-based resin (A) is 55 parts by mass or more and 90 parts by mass or less,
The content of the elastomer component (B) is 10 parts by mass or more and 45 parts by mass or less,
The content of the component (C) having an epoxy group and a vinyl group with respect to 100 parts by mass of the total amount of the polyethylene-based resin (A) and the elastomer component (B) is 0.1 parts by mass or more and 1.5 parts by mass or less Adhesive resin composition . The method of claim 1,
The component (C) having an epoxy group and a vinyl group is one in which an epoxy group is partially introduced into 1,2-polybutadiene, and has a number average molecular weight of 500 or more and 4,000 or less. 3. The method according to claim 1 or 2,
The adhesive resin composition in which the said elastomer component (B) is a styrene-ethylene-butylene-styrene copolymer whose styrene content is 8 mass % or more and 24 mass % or less. 3. The method according to claim 1 or 2,
The adhesive resin composition wherein the polyethylene-based resin (A) is polyethylene polymerized by a metallocene-based catalyst. A fluorine-based resin adhesive film having a single-layer structure formed from the adhesive resin composition of claim 1 or 2. A laminate having a layer formed of the adhesive resin composition according to claim 1 or 2. As the manufacturing method of the laminated body of Claim 6, the manufacturing method of any one of the following (1)-(3):
(1) a step of melt-extruding a layer formed of the adhesive resin composition to obtain a fluorine-based resin adhesive film having a single-layer configuration, and laminated films on both sides of the fluorine-based resin adhesive film, followed by thermocompression bonding to obtain a laminate a method for producing a laminate having a process;
(2) a step of melt-extruding a layer formed of the adhesive resin composition onto a film serving as a first substrate to obtain a laminate of a first substrate/adhesive layer, and further, a second substrate with a first substrate/adhesive a method for producing a laminate having a step of laminating to form a layer/second substrate and then thermocompression bonding to obtain a laminate;
(3) A method for producing a laminate comprising a step of simultaneously melt-extrusion molding a resin serving as a raw material for the first substrate, the adhesive resin composition, and a resin serving as a raw material for the second substrate.

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